Quantification of Photophysical Processes in All-Polymer Bulk Heterojunction Solar Cells
文献类型：期刊论文
| 作者 | Balawi, Ahmed H.3; Kan, Zhipeng3,4; Gorenflot, Julien3; Guarracino, Paola1; Chaturvedi, Neha3; Privitera, Alberto1; Liu, Shengjian2,3; Gao, Yajun3; Franco, Lorenzo1; Beaujuge, Pierre3 |
| 刊名 | SOLAR RRL
 |
| 出版日期 | 2020-04-28 |
| 页码 | 10 |
| 关键词 | all-polymer solar cells bulk heterojunctions nonfullerene acceptors organic photovoltaics transient absorption |
| ISSN号 | 2367-198X |
| DOI | 10.1002/solr.202000181 |
| 通讯作者 | Gorenflot, Julien(julien.gorenflot@kaust.edu.sa) ; Laquai, Frederic(frederic.laquai@kaust.edu.sa) |
| 英文摘要 | All-polymer solar cells lag behind the state-of-the-art in small molecule nonfullerene acceptor (NFA) bulk heterojunction (BHJ) organic solar cells (OSCs) for reasons still unclear. Herein, the efficiency-limiting processes in all-polymer solar cells are investigated using blends of the common donor polymer PBDT-TS1 with different acceptor polymers, namely P2TPD[2F]T and P2TPDBT[2F]T. Combining data from steady-state optical spectroscopy and time-resolved photoluminescence, transient absorption, and time-delayed collection field experiments, provides not only a concise but also quantitative assessment of the losses due to limited photon absorption, geminate and nongeminate charge carrier recombination, field-dependent charge generation, and inefficient carrier extraction. Although both systems exhibit a similar charge separation efficiency in the absence of external bias, charge separation is significantly enhanced in P2TPDBT[2F]T-based blends when biased. Kinetic parameters obtained via pulsed laser spectroscopy are used to reproduce the experimentally measured device current-voltage (J-V) characteristics and indicate that low fill factors originate either from nongeminate recombination competing with charge extraction, or from a pronounced field dependence of charge generation, depending on the acceptor polymer. The methodology presented here is generic and can be used to quantify the loss processes in BHJ OSCs including both all-polymer and small molecule NFA systems. |
| 资助项目 | King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR)[OSR-2018-CARF/CCF-3079] |
| WOS研究方向 | Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000529009500001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/10917]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Gorenflot, Julien; Laquai, Frederic |
| 作者单位 | 1.Univ Padua, Dept Chem Sci, Via Marzolo 1, I-35131 Padua, Italy 2.South China Normal Univ, Guangdong Prov Engn Technol Res Ctr Mat Energy Co, Guangzhou Key Lab Mat Energy Convers & Storage, Sch Chem, Guanghzou 510006, Peoples R China 3.KAUST, KAUST Solar Ctr KSC, Phys Sci & Engn Div PSE, Mat Sci & Engn Program MSE, Thuwal 239556900, Saudi Arabia 4.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Balawi, Ahmed H.,Kan, Zhipeng,Gorenflot, Julien,et al. Quantification of Photophysical Processes in All-Polymer Bulk Heterojunction Solar Cells[J]. SOLAR RRL,2020:10. |
| APA | Balawi, Ahmed H..,Kan, Zhipeng.,Gorenflot, Julien.,Guarracino, Paola.,Chaturvedi, Neha.,...&Laquai, Frederic.(2020).Quantification of Photophysical Processes in All-Polymer Bulk Heterojunction Solar Cells.SOLAR RRL,10. |
| MLA | Balawi, Ahmed H.,et al."Quantification of Photophysical Processes in All-Polymer Bulk Heterojunction Solar Cells".SOLAR RRL (2020):10. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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